SQLite

Check-in [f9020cffda]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Replicates http://www.sqlite.org/cvstrac/chngview?cn=4151 which modified fts2:

Modify handling of SQLITE_SCHEMA in fts2 code. An SQLITE_SCHEMA error may cause SQLite to reload the internal schema, deleting and recreating v-table objects. So the sqlite3_vtab structure can be deleted out from under a v-table implementation. (CVS 4183)

Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: f9020cffda02923ef45979bb447ec2e232086ad5
User & Date: shess 2007-07-25 00:38:06.000
Context
2007-07-25
00:56
Implement xRename() for fts1 so that it is possible to rename fts1 tables. See http://www.sqlite.org/cvstrac/chngview?cn=4143 (CVS 4184) (check-in: febf75f022 user: shess tags: trunk)
00:38
Replicates http://www.sqlite.org/cvstrac/chngview?cn=4151 which modified fts2:

Modify handling of SQLITE_SCHEMA in fts2 code. An SQLITE_SCHEMA error may cause SQLite to reload the internal schema, deleting and recreating v-table objects. So the sqlite3_vtab structure can be deleted out from under a v-table implementation. (CVS 4183) (check-in: f9020cffda user: shess tags: trunk)

00:28
Sorry, previous check-in included a last-minute "Did it really work?" change :-). (CVS 4182) (check-in: 5db25e369a user: shess tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to ext/fts1/fts1.c.
︙︙
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211

1212
1213
1214
1215
1216
1217
1218
1219
1220
1221

                              sqlite3_stmt **ppStmt){
  int rc;
  sqlite3_stmt *s = *ppStmt;
  assert( iStmt<MAX_STMT );
  assert( s==v->pFulltextStatements[iStmt] );

  while( (rc=sqlite3_step(s))!=SQLITE_DONE && rc!=SQLITE_ROW ){
    sqlite3_stmt *pNewStmt;

    if( rc==SQLITE_BUSY ) continue;
    if( rc!=SQLITE_ERROR ) return rc;

    rc = sqlite3_reset(s);
    if( rc!=SQLITE_SCHEMA ) return SQLITE_ERROR;

    v->pFulltextStatements[iStmt] = NULL;   /* Still in s */
    rc = sql_get_statement(v, iStmt, &pNewStmt);
    if( rc!=SQLITE_OK ) goto err;
    *ppStmt = pNewStmt;

    rc = sqlite3_transfer_bindings(s, pNewStmt);
    if( rc!=SQLITE_OK ) goto err;


    rc = sqlite3_finalize(s);
    if( rc!=SQLITE_OK ) return rc;
    s = pNewStmt;
  }
  return rc;

 err:
  sqlite3_finalize(s);
  return rc;
}








<
<



<
|
|
|
<
<
<
|
|
<
|
>

|
<








1189
1190
1191
1192
1193
1194
1195


1196
1197
1198

1199
1200
1201



1202
1203

1204
1205
1206
1207

1208
1209
1210
1211
1212
1213
1214

                              sqlite3_stmt **ppStmt){
  int rc;
  sqlite3_stmt *s = *ppStmt;
  assert( iStmt<MAX_STMT );
  assert( s==v->pFulltextStatements[iStmt] );

  while( (rc=sqlite3_step(s))!=SQLITE_DONE && rc!=SQLITE_ROW ){


    if( rc==SQLITE_BUSY ) continue;
    if( rc!=SQLITE_ERROR ) return rc;


    /* If an SQLITE_SCHEMA error has occured, then finalizing this
     * statement is going to delete the fulltext_vtab structure. If
     * the statement just executed is in the pFulltextStatements[]



     * array, it will be finalized twice. So remove it before
     * calling sqlite3_finalize().

     */
    v->pFulltextStatements[iStmt] = NULL;
    rc = sqlite3_finalize(s);
    break;

  }
  return rc;

 err:
  sqlite3_finalize(s);
  return rc;
}
︙︙
Added test/fts1n.test. 




























































































>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45

# 2007 July 24
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#*************************************************************************
# This file implements regression tests for SQLite library.  The focus
# of this script is testing the FTS1 module for errors in the handling
# of SQLITE_SCHEMA.
#
# $Id: fts1n.test,v 1.1 2007/07/25 00:38:06 shess Exp $
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# If SQLITE_ENABLE_FTS1 is not defined, omit this file.
ifcapable !fts1 {
  finish_test
  return
}

do_test fts1m-1.1 {
  execsql {
    CREATE VIRTUAL TABLE t1 USING fts1(a, b, c);
    INSERT INTO t1(a, b, c) VALUES('one three four', 'one four', 'one two');
    SELECT a, b, c FROM t1 WHERE c MATCH 'two';
  }
} {{one three four} {one four} {one two}}

# This test was crashing at one point.
#
do_test fts1m-1.2 {
  execsql {
    SELECT a, b, c FROM t1 WHERE c MATCH 'two';
    CREATE TABLE t3(a, b, c);
    SELECT a, b, c FROM t1 WHERE  c  MATCH 'two';
  }
} {{one three four} {one four} {one two} {one three four} {one four} {one two}}

finish_test